[1] Clin Inst Humanitas IRCCS, Rozzano, Italy
[2] Univ Hosp Rennes, Dept Cardiol, Rennes, France
[3] Osped Niguarda Ca Granda, Dept Cardiol, Milan, Italy
[4] Fdn IRCCS Polyclin San Matteo, Dept Cardiol, Pavia, Italy
[5] Fdn Cardioctr Ticino, Dept Cardiol, Lugano, Switzerland
[6] San Filippo Neri Hosp, Dept Cardiol, Rome, Italy
[7] Univ Bologna, Inst Cardiol, Bologna, Italy
[8] Univ Hosp Santa Maria della Misericordia, Dept Cardiol, Udine, Italy
[9] 9 Biometry & Clin Epidemiol, Res Dept, Pavia, Italy
[10] Univ Birmingham, Ctr Cardiovasc Sci, City Hosp, Birmingham, W Midlands, England